What is a best practice to ensure test results are reproducible?

• A. Version-controlled configurations and traceable IDs.
• B. Spontaneous test setups.
• C. No documentation.
• D. Randomized environment changes.

Answer: (A)

Reproducible test results come from locking down exactly what was run and under what conditions. When configurations are kept in version control, you capture the precise version of every setting, along with who changed it and when. Pairing that with traceable IDs for each test run, data set, and environment component lets you link every result back to the exact inputs and conditions that produced it. With these in place, you can recreate the same test by checking out the same configuration version, using the same data, and running in the same environment, then compare results across runs to verify consistency.

This approach prevents drift that happens with ad hoc setups, missing documentation, or changes to the environment between runs. Spontaneous setups and random changes make it impossible to know exactly what was used, so you can’t reliably reproduce results or diagnose differences.